White 4-leaf clover?

Patamon in the Waterfront has two quests about those clovers: either you trade two for a green clover (exp item) or 10 for a summoning item.
The summoning item will call three Monochromon bosses("mono trio"), who drop each a type of clover, requested by Patamon (for a quest, the rewards are: Clone A, chickens, 10 exp clovers, 100M).